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On Android, call to authenticate immediately returns CANCELED #8

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kylethompson002 opened this issue Sep 12, 2022 · 9 comments
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@kylethompson002
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Describe the bug

When I make the call to FlutterWebAuth2.authenticate, the web view does not open, and it immediately returns PlatformException(CANCELED, User canceled login, null, null).

To Reproduce

Steps to reproduce the behavior:

  1. Go to '...'
  2. Click on '....'
  3. Scroll down to '....'
  4. See error

Expected behavior

When FlutterWebAuth2.authenticate is called, a web view should open to the given url.

Screenshots

If applicable, add screenshots to help explain your problem.

Device (please complete the following information!)

  • Device: OnePlus LE2115
  • OS: Android 12
  • Browser: Chrome
  • flutter_web_auth_2 version: 1.1.2

Additional context

I can only reproduce this issue once our android app is built in release mode and distributed through the Play store. I cannot reproduce it when building locally with Android Studio in either debug or release mode. It also can not reproduce this issue in our iOS app (same flutter code).

@kylethompson002 kylethompson002 added the bug Something isn't working label Sep 12, 2022
@ThexXTURBOXx
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ThexXTURBOXx commented Sep 13, 2022

Thanks for reporting this issue. I have taken a look at your fork and noticed that you have removed the observer lines. Did that help by any chance?
Depending on that, I will search for better solutions. I cannot reproduce the behavior in an app of mine, that's why.
Also: Have you by chance tested the behavior on other (Android) devices also?

@kylethompson002
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Thanks for your reply. I've been doing some more testing today. Removing the observer lines did not solve the issue. I have observed the issue on both of my Android devices (OnePlus 9 and Google Pixel XL). I'm a little puzzled as to why this only happens for me in release mode 🤔. I'm wondering if it could be an issue with CustomTabs.

@ThexXTURBOXx
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It also puzzles me that it does not work after removing those lines. That is really weird. I would not expect this to be an issue with Custom Tabs, however, you cannot be sure.
You most likely use ProGuard for your final release. Maybe that causes some problem?

@kylethompson002
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I finally found my issue. It was a stupid mistake on my part 🤦 . I had an intent filter for deep links that was intercepting the authenticate URL and not letting CustomTabs open. Thank you for the support.

@ThexXTURBOXx ThexXTURBOXx added invalid This doesn't seem right and removed bug Something isn't working labels Sep 20, 2022
@ThexXTURBOXx
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ThexXTURBOXx commented Sep 20, 2022

Okay, good to know for the future! Thank you very much for letting me know the solution! :)

@kecson
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kecson commented May 16, 2024

I finally found my issue. It was a stupid mistake on my part 🤦 . I had an intent filter for deep links that was intercepting the authenticate URL and not letting CustomTabs open. Thank you for the support.

how to fix?

@ThexXTURBOXx
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how to fix?

Look through all your intent filters (and all the ones from the package you are depending on - they might also be the cause of the problem) and remove the ones which interfere with flutter_web_auth_2's intent filter

@kecson
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kecson commented May 17, 2024

I finally found my issue. It was a stupid mistake on my part 🤦 . I had an intent filter for deep links that was intercepting the authenticate URL and not letting CustomTabs open. Thank you for the support.

your redirect_url is https scheme or custom url? can you show me the AndroidMainfest.xml and you redirect_url?

@jaybconsulting
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What if I want to set up both deep linking (so the user can click a link from somewhere else and it opens my app) and the callback URL? Based on this solution it feels like I can't do both because my deep link will just be intercepting my callback URL?

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